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Evaluation of thermoforming potential of polystyrene/perlite composites

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Abstract

In this work, the thermoforming potential of PS/perlite composites was investigated. Compositions with amounts of 10% and 20% of the mineral filler were processed in a twin-screw extruder with two different screw configuration profiles, followed by compression molding. The influence of perlite content and screw configuration profiles on the flow behavior and heat capacity of the composites was evaluated through morphological, rheological, and thermal properties. The micrographs indicated that most of the perlite broke during the processing and the ones that remained intact were not bigger than 50 µm. The rheological assessment and the evaluation were decisive for the thermoforming properties characterization. The most pronounced elastic behavior identified for the composite processed in low shear conditions and with higher perlite content (P(20%wt)2:2), even in the fragments form, indicated that this composite was the one with the highest potential thermoforming. The low heat capacity value identified for P(20%wt)2:2 composite when compared to the neat-PS:2:2 reinforced that this was the most suitable composite for thermoforming considering its rapid cooling capability after molded.

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Data availability

Data supporting the findings of this study are available from the corresponding author on request.

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Acknowledgements

The authors acknowledge Innova for donating the polystyrene. The authors acknowledge the Conselho Nacional de Desenvolvimento Científico e Tecnológico—CNPQ (309461/2021-9), and Fundação de Amparo à Pesquisa do Estado do Rio de Janeiro—FAPERJ (E-26/010.001927/2019) for research supporting.

Funding

Ana Maria F. de Sousa has received research support from Conselho Nacional de Desenvolvimento Científico e Tecnológico—CNPQ (309461/2021-9) and Fundação de Amparo à Pesquisa do Estado do Rio de Janeiro—FAPERJ (E-26/010.001927/2019).

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Authors and Affiliations

  1. Instituto de Química, Universidade do Estado do Rio de Janeiro, 524 São Francisco Xavier Street, Pavilhão Haroldo Lisboa da Cunha, 310, Maracanã, Rio de Janeiro, RJ, 20550-900, Brazil

    Amanda Gerhardt de Oliveira, Elisson Brum Dutra da Rocha & Ana Maria Furtado de Sousa

  2. Instituto de Macromoléculas Professora Eloisa Mano, Universidade Federal do Rio de Janeiro (IMA/UFRJ), 2013 Horário Macedo Avenue, BL J, Cidade Universitária, Rio de Janeiro, RJ, 21941-598, Brazil

    Júlio César Jandorno Jr & Ana Lucia Nazareth da Silva

  3. Programa de Engenharia Ambiental, Universidade Federal do Rio de Janeiro (PEA/UFRJ), 2013 Horário Macedo Avenue, BL J, Cidade Universitária, Rio de Janeiro, RJ, 21941-598, Brazil

    Ana Lucia Nazareth da Silva

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  1. Amanda Gerhardt de Oliveira
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  2. Elisson Brum Dutra da Rocha
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  3. Júlio César Jandorno Jr
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  4. Ana Maria Furtado de Sousa
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  5. Ana Lucia Nazareth da Silva
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Contributions

AGOF involved in methodology, investigation, formal analysis, and writing—original draft. JCJJ involved in experimental investigation. EBDR involved in rheological data acquisition and analysis and writing—original draft. AMFS involved in funding acquisition, conceptualization, supervision, and writing—review. ALNS involved in conceptualization, supervision, rheological analysis validation, and final writing—review.

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Correspondence to Elisson Brum Dutra da Rocha.

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de Oliveira, A.G., da Rocha, E.B.D., Jandorno, J.C. et al. Evaluation of thermoforming potential of polystyrene/perlite composites. Polym. Bull. 81, 3007–3019 (2024). https://doi.org/10.1007/s00289-023-04819-0

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  • DOI: https://doi.org/10.1007/s00289-023-04819-0

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